object fff {
    def main(args: Array[String]): Unit = {
      /**
       * 案例1：求两个数的最⼤值
       * 案例2：求三个数的最⼤值
       */
      println(max(1,2))
      println(max(4,3))
      println(max(1,2,3))
      println(max(6,5,4))
    }
    def max(n1: Int, n2: Int): Int = {
      if (n1 > n2) return n1 else n2
    }
    def max(n1: Int, n2: Int, n3: Int): Int = {
      var res = if (n1 > n2) n1 else n2
      res = if (n3 > res) n3 else res
      return res
    }
}
